Chapter 11

Ichthyolite Beds--An interesting Discovery--Two Storeys of Organic Remains in the Old Red Sandstone--Ancient Ocean of Lower Old Red--Two great Catastrophes--Ancient Fish Scales--Their skilful Mechanism displayed by examples--Bone Lips--Arts of the Slater and Tiler as old as Old Red Sandstone--Jet Trinkets--Flint Arrow-heads--Vitrified Forts of Scotland--Style of grouping Lower Old Red Fossils--Illustration from Cromarty Fishing Phenomena--Singular Remains of Holoptychius--Ramble with Mr. Robert Dick--Color of the Planet Mars--Tombs never dreamed of by Hervey--Skeleton of the Bruce--Gigantic Holoptychius--"Coal money Currency"--Upper Boundary of Lower Old Red--Every one may add to the Store of Geological Facts--Discoveries of Messrs. Dick and Peach. 192